document.write('<a href="http://www.coal.com.cn/guanggao/WebClick_96.htm" target="_blank"><img  src="http://www.coal.com.cn/guanggao/AdImage/20100723103531193HB50.gif" width="256" height="74" border="0" alt="北京合康亿盛变频科技股份有限公司"/></a>')